I also have 25 years of experience and started my career writing C and FORTRAN on mainframes without any real library let alone a framework and then wrote my own libraries in C for my next job where I had to write cross platform code that ran on x86 based PCs and mainframes.
My next job, involved maintaining a proprietary compiler/IDE/VM for ruggedized Windows CE devices. So I think I have experience working without frameworks. Not to mention by the time I graduated from college in 1996 , I was a hobbyist assembly language programmer on 4 processors for 10 years (65C02, 68030, PPC 601, x86)
I can say that it’s the fifth level of hell coming behind an “architect’s” half assed framework who thought their problem was so special that they didn’t want to use a mainstream framework to handle non business specific concerns.
There have been a few times that I have ripped out my own code in favor of a popular library when I discovered it.